The machete attack is being investigated as ‘lone wolf terror attack’ by the FBI.
The suspect traveled to Dubai in 2012.
Via PJ Media:

CBS News has identified the suspect as Mohamed Barry, however neither 10TV nor Columbus Police have confirmed the suspect’s name. CBS News also reports Barry has a Somali background and may have traveled to Dubai in 2012.

Law enforcement tells them the incident appears to be the type of “lone wolf terrorist attacks they’re trying to stop.”